usually causes severe pain
involving some parts of the face.
The treatment is as painful as the pain of the disease itself. The main stay of treatment is by medical treatment by using tablets as your mother is on.
The severe cases or cases not responding to treatment may get benefit by surgical methods of treatment.
The surgical methods of treatment are by ablative radiosurgery
or by decompression surgery. Please do consult your neurologist
, he will be able to guide you regarding further management.